Service difficulty report · Keelbeam · Boeing 747412F

Difficulty date
July 10, 2024
Submitted
July 11, 2024
Operation
Air carrier
Aircraft
N489MC
Make and model
Boeing 747412F
Aircraft serial
26553
Aircraft time
114,651 hours, 20,095 cycles
Part
Keelbeam
Condition
Corroded
Location
Zone 100
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CORROSION DAMAGES ON UNDERWING KEEL BEAM BETWEEN STA 1040 AND STA 1079, LBL 9.(<P>1. BLENDED OUT THE DAMAGE AREA IAW SRM 51-10-02-0G-0 REV 101. 2. PFM NDT INSP REFER TO JOB CARD ATTACHING SHEET NO: 0432998. 3. MEASURE THE REWORK AREA DIMENSION REFER TO DATA SHEET NO: 9642086-1. 4. ACCOMPLISHED EI NO: T2024A53M-1537 REV 0 AND REV 1. 5. CONDITION CHECK NORMAL AND JOB COMPLETED.</P>)